KEY FEATURES:
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DURABLE METAL HOUSING: The roller features a sturdy metal housing, providing robust support for the 1-1/8" steel concave ball-bearing wheel, and enhancing the overall longevity of the product.
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1-1/8" DIAMETER STEEL WHEEL: The steel concave ball-bearing wheel, with a substantial diameter of 1-1/8", contributes to smooth and effortless door movement, minimizing friction for a quiet operation.